Suppose you ride to school with a friend and often arrive at a certain stoplight when it is red. One day she states, "It seems like this light is green only 10% of the time when we get here." You think it is more often than 10% and wants to test this. You keep track of the color (green/not green) the next 20 times you go to school and find that 4 times ( 4 / 20 = 20 % ) the light is green when you arrive. You wish to see if your sample provides strong evidence that the true proportion of times the light is green is greater than 10%. In other words, you are testing the hypothesis

The lights on the Traffic Stand

Explanation: From the statement above I believe in the hypothesis that most of the time when you get to the traffic light it changes to yellow before Red for the driver to halt for a stop . Exceptional cases for green is when its has passed through violet to yellow to Green that you would have the 20% assumption of green or not green whenever you go to school.

when your a dog and you need a bone.   go and eat a rabbit

marginal cost is a microeconomic measure that us to evaluate the extent to which the level of production of a good is sustainable in accounting, that is, to how many quantities the company plans to profit from the production of the good.

the concept of marginal cost is simple, it means the cost of producing one more item. for example, in the case of pies, the marginal cost is the cost of producing one more pie than those that have already been produced.

it is important to understand that productive activity influences marginal cost. the marginal cost of some goods can be very high, while others may be insignificant. for example, the marginal cost of producing an extra plane is very high. already the marginal cost of a water company to provide 1l more water is derisory.

in the case of pies, the cost involves the inputs, the labor and the fixed cost, which involves the fixed space of the bakery. the level of production initially has the marginal cost decreasing because there is space and manpower available. however, to produce more you have to hire more workers and buy more inputs. if physical space is limited, workers will conflict with places, inputs and their productivity will decrease, meaning there is an optimum point of production for each level of space and manpower. from this point on, the productivity of the workers will be getting smaller because of lack of space, so that the marginal cost of producing one more pie will be increasing. so, although you have not posted the chart, but if you have the answer, you can see that my explanation goes according to the marginal cost curve that will increase from the 4th pie, answer (c).